2163889

素因数分解:

$7^2\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{79}}^1$

素因数の和:149

約数の個数: 24

約数和(自身を含む): 2808960

約数和(自身を除く): 645071

約数列:

[1, 7, 13, 43, 49, 79, 91, 301, 553, 559, 637, 1027, 2107, 3397, 3871, 3913, 7189, 23779, 27391, 44161, 50323, 166453, 309127, 2163889]

約数ペア:

[(1, 2163889), (7, 309127), (13, 166453), (43, 50323), (49, 44161), (79, 27391), (91, 23779), (301, 7189), (553, 3913), (559, 3871), (637, 3397), (1027, 2107)]